As you are probably aware, the entire DAVID company, team and product range has been integrated into HP Inc.
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Auto. Add to List (SL only): After the scan, the result will be added to the Shapefusion Scanlist immediately. Afterwards, DAVID will return to the Structured Light menu, ready for the next scan. This means you can scan an object all around, and collect the scans, with only one click ("Start") for each view.This saves you two mouse clicks per scan.

Align to Previous Scan: When a scan is added to the Shapefusion Scanlist, it will be automatically aligned to the previous scan (the last in list) with "Free" mode. If the two scans overlap well, this will probably succeed. In any case, please check the alignment result!This saves you 3-4 clicks per scan.

Both: If both options are selected, DAVID will immediately send every scan to Shapefusion, align it to the previous scan, and switch back to Structured Light menu, ready for the next scan. Please note that the alignment result can always be wrong or imprecise, depending on the data - don't trust it blindly...

You should not use those options while you are still optimizing your set up or scanning difficult objects. But for routine "mass production", they should be helpful and speed up the process!

Furthermore:Keyboard Shortcuts: In Shapefusion, you can new use Esc, Alt+1, Alt+2 to toggle/change/disable the tools, Ctrl+Z, Ctrl+Y for Undo/Redo, and Alt+I to invert the selection. As before, you can use "Del" to delete and F12 to make a screenshot.

Improved Fusion: Sharper Fusion results!

And some more small improvements and bugfixes...

Please post your feedback and let us know what you like, what you don't like, and if you find any bugs...

Just an idea:This would be ideal in combination with a motorized object's motion (turntable).A COM message sequence for a SL scan with AutoAlign enabled starts with a "S" followed by "N"s and a "T". Finally passing it over to ShapeFusion sends a "Z". But there seems to be nothing that says that DAVID is ready to do the next scan. This missing message "X" has to be sent after the AutoAlignment to tell the controller of the turntable that DAVID is ready to recieve a "S" command just when DAVID switches back to scanning mode. After recieving a "X" message from DAVID and ready with its movement the controller could send a "S" command without some fixed delay. After a certain number (depending on the planned motorized motion) of sent "S"s the contoller could send another "Y" command to make DAVID fall to Shapefusion....

Thanks Gunter, I have fixed the link. Yours is OK too (same destination).

I don't have the hardware to test here at the moment, but doesn't the COM message ModeSL (default "2") work for your "X" message? I think DAVID should send that when it goes back to SL after alignment. ?

Excellent addition. However my application requires that scans be combined for correct registration. Aligning the scan to the previous single scan does not work for the majority of my scans unless the previous scans are combined.

Could you add an add and combine feature. Many of the commercial systems combine the scans as successive scans are made and added.

I find the David-3D scan alignment algorithm to be equal to or better than the commercial systems.

What application do you have? Why do you need to group all previous scans?

I think the standard procedure is scanning around an object. Let's say you make 8 scans around the object. Then, e.g. scan #6 overlaps with scan #5, but not with all previous scans #1 to #4. It should align very well with #5.If you make a group #1-#5, scan #6 will not align very well with that group because it overlaps only with a very small percentage of the group data.

Aligning to the group of several or all previous scans is helpful e.g. for scan #9 showing the top side of an object. Just an example.

I currently make 8 scans around the object at different tilt angles, as necessary.

Arch tooth models are not the problem. Small single prepared tooth die models can be problematic to align. Additional scans, non sequential are needed to capture shadowed regions which need to be aligned.

The method that I have developed which works very well is to capture two main images, top view, combine and then proceed to side view with rotation and align, combine and repeat. I have found that sometimes 2-3 images can be aligned without combining but many of the images will not align properly without combining.

The commercial dental scanners use the smae basic method for aligning succesive scans.

I have optimized the scan sequence with beta 2. However, for my application I still need to combine scans to align the last few scans.

Dental object shapes are generally different every part, as many variations as there are people. In general 8mm in diameter 3-10 mm in height with sidewalls, parallel to sloping, with tops that are flat to V shape with bottom flare out followed by a sharp undercut.

Hi sven,We have seen Mattia scans. His posted pictures ll scans pixels merge with each other. Despite i am using David USB Mono with SL but my scans are also like the posted picture above. Do you know why?